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| Assured Safety Assessment Method of High Consequence System with Abnormal Environment |
| Revised:April 16, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.05.002 |
| KeyWord:high consequence system abnormal environment uncertainty analysis probability of loss of assured safety (PLOAS) |
| Author | Institution |
| XIE Chao-yang |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| LIU Ping |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| HE Qian-yun |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| JIANG Hua-bing |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| LI Ming-hai |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
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| Abstract: |
| An assessment method of assured safety and technical frameworks for high consequence system with abnormal environment were obtained, which provided scientific support for safety design and protective decision-making of high consequence system. Based on structural responses behavior mechanism of high consequence system under abnormal environmental conditions, the response characteristic parameters representing safety are used as the object, and the technical methods such as testing, numerical simulation as well as the uncertainty analysis methods such as surrogate model construction are combined, and through quantitative computation of the probability of characteristic parameters not-reaching failure threshold, a general assured safety assessment method and technical processes are established. For single characteristic parameter system, strong and weak system and multiple characteristic parameter system, the definitions of PLOAS were proposed respectively. The high-pressure vessel was used as an engineering case, to realize the assured safety assessment of the high-pressure vessel in the fire environment. Through theoretical analysis and case calculations, it is shown that the technical process of the assured security assessment method established takes both physical and statistical characteristics of system security into account, and has good applicability and generalization for the security risk assessment of high consequence systems with high security requirements. |
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